Chevrolet Trailblazer 2002–2004 — technical service bulletin
Bulletin 01016 · NHTSA communication 10007572 · issued Jan 1, 2004
Technical service bulletin
communication type
Electrical System
component
2002–2004
model years
9
vehicle entries
Official summary
Anti-lock brake system (abs) light on, red brake light on, service 4wd light on, hvac blower motor inoperative. *tt
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.